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dc.contributor.advisor Cloutier, Paul A.
dc.creatorOlsen, Christopher Scott
dc.date.accessioned 2011-07-25T01:37:48Z
dc.date.available 2011-07-25T01:37:48Z
dc.date.issued 2009
dc.identifier.urihttps://hdl.handle.net/1911/61772
dc.description.abstract This research paper describes the design, setup, and application of a moving multi-Langmuir probe array that measured and mapped ion flux and plasma source efficiency in a flowing plasma with large (∼1.5 T) external magnetic fields in the VASIMR (Variable Specific Impulse Magnetoplasma Rocket) VX-100 experiment. The probe array was swung through an argon plasma revealing a detailed 2-dimensional cross section. Neutral input flow and probe collector bias voltage were scanned from pulse to pulse in an effort to find optimal settings. Secondary electron emission was found to be an important factor that artificially enhanced the measured flux at large negative bias voltages. The most accurate bias voltages were found to be around -20 volts where the flux enhancing effects were minimized. Variations of this probe will be used in more advanced plasma rocket study.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectAerospace engineering
Plasma physics
dc.title Ion flux maps and helicon source efficiency in the VASIMR VX-100 experiment using a moving Langmuir probe array
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Olsen, Christopher Scott. "Ion flux maps and helicon source efficiency in the VASIMR VX-100 experiment using a moving Langmuir probe array." (2009) Master’s Thesis, Rice University. https://hdl.handle.net/1911/61772.


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